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OGRE
2.1.0unstable
Object-Oriented Graphics Rendering Engine
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Ogre assumes that there are separate vertex and fragment programs to deal with but GLSL ES has one program object that represents the active vertex and fragment shader objects during a rendering state. More...
#include <OgreGLSLESProgramManagerCommon.h>
Public Member Functions | |
GLSLESProgramManagerCommon (void) | |
~GLSLESProgramManagerCommon (void) | |
void | extractConstantDefs (const String &src, GpuNamedConstants &constantDefs, const String &filename) |
Populate a list of uniforms based on GLSL ES source. More... | |
void | extractUniforms (GLuint programObject, const GpuConstantDefinitionMap *vertexConstantDefs, const GpuConstantDefinitionMap *fragmentConstantDefs, GLUniformReferenceList &list, GLUniformBufferList &sharedList) |
Populate a list of uniforms based on a program object. More... | |
void | optimiseShaderSource (GLSLESGpuProgram *gpuProgram) |
Ogre assumes that there are separate vertex and fragment programs to deal with but GLSL ES has one program object that represents the active vertex and fragment shader objects during a rendering state.
GLSL Vertex and fragment shader objects are compiled separately and then attached to a program object and then the program object is linked. Since Ogre can only handle one vertex program and one fragment program being active in a pass, the GLSL ES Link Program Manager does the same. The GLSL ES Link program manager acts as a state machine and activates a program object based on the active vertex and fragment program. Previously created program objects are stored along with a unique key in a hash_map for quick retrieval the next time the program object is required.
Ogre::GLSLESProgramManagerCommon::GLSLESProgramManagerCommon | ( | void | ) |
Ogre::GLSLESProgramManagerCommon::~GLSLESProgramManagerCommon | ( | void | ) |
void Ogre::GLSLESProgramManagerCommon::extractConstantDefs | ( | const String & | src, |
GpuNamedConstants & | constantDefs, | ||
const String & | filename | ||
) |
Populate a list of uniforms based on GLSL ES source.
src | Reference to the source code |
constantDefs | The defs to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want). |
filename | The file name this came from, for logging errors. |
void Ogre::GLSLESProgramManagerCommon::extractUniforms | ( | GLuint | programObject, |
const GpuConstantDefinitionMap * | vertexConstantDefs, | ||
const GpuConstantDefinitionMap * | fragmentConstantDefs, | ||
GLUniformReferenceList & | list, | ||
GLUniformBufferList & | sharedList | ||
) |
Populate a list of uniforms based on a program object.
programObject | Handle to the program object to query |
vertexConstantDefs | Definition of the constants extracted from the vertex program, used to match up physical buffer indexes with program uniforms. May be null if there is no vertex program. |
fragmentConstantDefs | Definition of the constants extracted from the fragment program, used to match up physical buffer indexes with program uniforms. May be null if there is no fragment program. |
list | The list to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want). |
void Ogre::GLSLESProgramManagerCommon::optimiseShaderSource | ( | GLSLESGpuProgram * | gpuProgram | ) |